(05/15/2002) - The STS-111 and Expedition 5 crews pose on top of the M-113 armored personnel carrier they practiced driving during emergency egress training at the pad. Standing, left to right, are Mission Commander Kenneth Cockrell, Mission Specialist Philippe Perrin, Expedition 5 member Peggy Whitson, Pilot Paul Lockhart and Mission Specialist Franklin Chang-Diaz; in front are Expedition 5 members Sergei Treschev (left) and Commander Valeri Korzun (right). The crews are taking part in Terminal Countdown Demonstration Test activities at KSC, which include a simulated launch countdown. Expedition 5 will travel to the International Space Station on mission STS-111 as the replacement crew for Expedition 4, who will return to Earth aboard Endeavour. Known as Utilization Flight -2, the mission includes attaching a Canadian-built mobile base system to the International Space Station that will enable the Canadarm2 robotic arm to move along a railway on the Station's truss to build and maintain the outpost. The crew will also replace a faulty wrist/roll joint on the Canadarm2 as well as unload almost three tons of experiments and supplies from the Italian-built Multi-Purpose Logistics Module Leonardo. Launch of Space Shuttle Endeavour on mission STS-111 is scheduled for May 30, 2002